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The structure termios stores the input and output baud-rates in c_cflag. The table below shows symbolic names defined in <termios.h> and the baud-rate each represents:
| Name | Description |
|---|---|
| B0 | hang up |
| B50 | 50 baud |
| B75 | 75 baud |
| B110 | 110 baud |
| B134 | 134.5 baud |
| B150 | 150 baud |
| B200 | 200 baud |
| B300 | 300 baud |
| B600 | 600 baud |
| B1200 | 1200 baud |
| B1800 | 1800 baud |
| B2400 | 2400 baud |
| B4800 | 4800 baud |
| B9600 | 9600 baud |
| B19200 | 19200 baud |
| B38400 | 38400 baud |
Note that the zero baud-rate, B0, is used to terminate the connection. If B0 is specified, the modem control lines are no longer asserted; normally, this disconnects the line (see cfsetospeed and tcsetattr in termios(S)):
The termios structure members c_iflag, c_oflag, c_cflag
and c_lflag take as values the bitwise inclusive-OR of bitwise distinct
masks with symbolic names defined by the <termios.h> header file
(see
termio(M)).